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  <title>Return a number upper than zero if there are pending events</title>

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</div><hr /><div id="function.inotify-queue-len" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">inotify_queue_len</h1>
  <p class="verinfo">(PECL inotify &gt;= 0.1.2)</p><p class="refpurpose"><span class="refname">inotify_queue_len</span> &mdash; <span class="dc-title">Return a number upper than zero if there are pending events</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.inotify-queue-len-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">int</span> <span class="methodname"><strong>inotify_queue_len</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$inotify_instance</code></span>
   )</div>

  <p class="para rdfs-comment">
   This function allows to know if <span class="function"><a href="function.inotify-read.html" class="function">inotify_read()</a></span> will block or not.
   If a number upper than zero is returned, there are pending events and 
   <span class="function"><a href="function.inotify-read.html" class="function">inotify_read()</a></span> will not block. 
  </p>
 </div>

 
 <div class="refsect1 parameters" id="refsect1-function.inotify-queue-len-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">inotify_instance</code></em></dt>

     <dd>

      <p class="para">
       <span class="function"><a href="function.inotify-init.html" class="function">inotify_init()</a></span>返回的资源
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 
 <div class="refsect1 returnvalues" id="refsect1-function.inotify-queue-len-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns a number upper than zero if there are pending events. 
  </p>
 </div>

 
 <div class="refsect1 seealso" id="refsect1-function.inotify-queue-len-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.inotify-init.html" class="function" rel="rdfs-seeAlso">inotify_init()</a> - Initialize an inotify instance</span></li>
    <li class="member"><span class="function"><a href="function.stream-select.html" class="function" rel="rdfs-seeAlso">stream_select()</a> - Runs the equivalent of the select() system call on the given
   arrays of streams with a timeout specified by tv_sec and tv_usec</span></li>
    <li class="member"><span class="function"><a href="function.stream-set-blocking.html" class="function" rel="rdfs-seeAlso">stream_set_blocking()</a> - Set blocking/non-blocking mode on a stream</span></li>
   </ul>
  </p>
 </div>


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